314 lines
6.4 KiB
C
314 lines
6.4 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
|
|
/*
|
|
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
|
|
* Use is subject to license terms.
|
|
*/
|
|
|
|
#ifndef _IA32_SYS_ASM_LINKAGE_H
|
|
#define _IA32_SYS_ASM_LINKAGE_H
|
|
|
|
#include <sys/stack.h>
|
|
#include <sys/trap.h>
|
|
|
|
#if defined(__linux__) && defined(CONFIG_SLS)
|
|
#define RET ret; int3
|
|
#else
|
|
#define RET ret
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifdef _ASM /* The remainder of this file is only for assembly files */
|
|
|
|
/*
|
|
* make annoying differences in assembler syntax go away
|
|
*/
|
|
|
|
/*
|
|
* D16 and A16 are used to insert instructions prefixes; the
|
|
* macros help the assembler code be slightly more portable.
|
|
*/
|
|
#if !defined(__GNUC_AS__)
|
|
/*
|
|
* /usr/ccs/bin/as prefixes are parsed as separate instructions
|
|
*/
|
|
#define D16 data16;
|
|
#define A16 addr16;
|
|
|
|
/*
|
|
* (There are some weird constructs in constant expressions)
|
|
*/
|
|
#define _CONST(const) [const]
|
|
#define _BITNOT(const) -1!_CONST(const)
|
|
#define _MUL(a, b) _CONST(a \* b)
|
|
|
|
#else
|
|
/*
|
|
* Why not use the 'data16' and 'addr16' prefixes .. well, the
|
|
* assembler doesn't quite believe in real mode, and thus argues with
|
|
* us about what we're trying to do.
|
|
*/
|
|
#define D16 .byte 0x66;
|
|
#define A16 .byte 0x67;
|
|
|
|
#define _CONST(const) (const)
|
|
#define _BITNOT(const) ~_CONST(const)
|
|
#define _MUL(a, b) _CONST(a * b)
|
|
|
|
#endif
|
|
|
|
/*
|
|
* C pointers are different sizes between i386 and amd64.
|
|
* These constants can be used to compute offsets into pointer arrays.
|
|
*/
|
|
#if defined(__amd64)
|
|
#define CLONGSHIFT 3
|
|
#define CLONGSIZE 8
|
|
#define CLONGMASK 7
|
|
#elif defined(__i386)
|
|
#define CLONGSHIFT 2
|
|
#define CLONGSIZE 4
|
|
#define CLONGMASK 3
|
|
#endif
|
|
|
|
/*
|
|
* Since we know we're either ILP32 or LP64 ..
|
|
*/
|
|
#define CPTRSHIFT CLONGSHIFT
|
|
#define CPTRSIZE CLONGSIZE
|
|
#define CPTRMASK CLONGMASK
|
|
|
|
#if CPTRSIZE != (1 << CPTRSHIFT) || CLONGSIZE != (1 << CLONGSHIFT)
|
|
#error "inconsistent shift constants"
|
|
#endif
|
|
|
|
#if CPTRMASK != (CPTRSIZE - 1) || CLONGMASK != (CLONGSIZE - 1)
|
|
#error "inconsistent mask constants"
|
|
#endif
|
|
|
|
#define ASM_ENTRY_ALIGN 16
|
|
|
|
/*
|
|
* SSE register alignment and save areas
|
|
*/
|
|
|
|
#define XMM_SIZE 16
|
|
#define XMM_ALIGN 16
|
|
|
|
#if defined(__amd64)
|
|
|
|
#define SAVE_XMM_PROLOG(sreg, nreg) \
|
|
subq $_CONST(_MUL(XMM_SIZE, nreg)), %rsp; \
|
|
movq %rsp, sreg
|
|
|
|
#define RSTOR_XMM_EPILOG(sreg, nreg) \
|
|
addq $_CONST(_MUL(XMM_SIZE, nreg)), %rsp
|
|
|
|
#elif defined(__i386)
|
|
|
|
#define SAVE_XMM_PROLOG(sreg, nreg) \
|
|
subl $_CONST(_MUL(XMM_SIZE, nreg) + XMM_ALIGN), %esp; \
|
|
movl %esp, sreg; \
|
|
addl $XMM_ALIGN, sreg; \
|
|
andl $_BITNOT(XMM_ALIGN-1), sreg
|
|
|
|
#define RSTOR_XMM_EPILOG(sreg, nreg) \
|
|
addl $_CONST(_MUL(XMM_SIZE, nreg) + XMM_ALIGN), %esp;
|
|
|
|
#endif /* __i386 */
|
|
|
|
/*
|
|
* profiling causes definitions of the MCOUNT and RTMCOUNT
|
|
* particular to the type
|
|
*/
|
|
#ifdef GPROF
|
|
|
|
#define MCOUNT(x) \
|
|
pushl %ebp; \
|
|
movl %esp, %ebp; \
|
|
call _mcount; \
|
|
popl %ebp
|
|
|
|
#endif /* GPROF */
|
|
|
|
#ifdef PROF
|
|
|
|
#define MCOUNT(x) \
|
|
/* CSTYLED */ \
|
|
.lcomm .L_/**/x/**/1, 4, 4; \
|
|
pushl %ebp; \
|
|
movl %esp, %ebp; \
|
|
/* CSTYLED */ \
|
|
movl $.L_/**/x/**/1, %edx; \
|
|
call _mcount; \
|
|
popl %ebp
|
|
|
|
#endif /* PROF */
|
|
|
|
/*
|
|
* if we are not profiling, MCOUNT should be defined to nothing
|
|
*/
|
|
#if !defined(PROF) && !defined(GPROF)
|
|
#define MCOUNT(x)
|
|
#endif /* !defined(PROF) && !defined(GPROF) */
|
|
|
|
#define RTMCOUNT(x) MCOUNT(x)
|
|
|
|
/*
|
|
* Macro to define weak symbol aliases. These are similar to the ANSI-C
|
|
* #pragma weak _name = name
|
|
* except a compiler can determine type. The assembler must be told. Hence,
|
|
* the second parameter must be the type of the symbol (i.e.: function,...)
|
|
*/
|
|
#define ANSI_PRAGMA_WEAK(sym, stype) \
|
|
/* CSTYLED */ \
|
|
.weak _/**/sym; \
|
|
/* CSTYLED */ \
|
|
.type _/**/sym, @stype; \
|
|
/* CSTYLED */ \
|
|
_/**/sym = sym
|
|
|
|
/*
|
|
* Like ANSI_PRAGMA_WEAK(), but for unrelated names, as in:
|
|
* #pragma weak sym1 = sym2
|
|
*/
|
|
#define ANSI_PRAGMA_WEAK2(sym1, sym2, stype) \
|
|
.weak sym1; \
|
|
.type sym1, @stype; \
|
|
sym1 = sym2
|
|
|
|
/*
|
|
* ENTRY provides the standard procedure entry code and an easy way to
|
|
* insert the calls to mcount for profiling. ENTRY_NP is identical, but
|
|
* never calls mcount.
|
|
*/
|
|
#define ENTRY(x) \
|
|
.text; \
|
|
.align ASM_ENTRY_ALIGN; \
|
|
.globl x; \
|
|
.type x, @function; \
|
|
x: MCOUNT(x)
|
|
|
|
#define ENTRY_NP(x) \
|
|
.text; \
|
|
.align ASM_ENTRY_ALIGN; \
|
|
.globl x; \
|
|
.type x, @function; \
|
|
x:
|
|
|
|
#define RTENTRY(x) \
|
|
.text; \
|
|
.align ASM_ENTRY_ALIGN; \
|
|
.globl x; \
|
|
.type x, @function; \
|
|
x: RTMCOUNT(x)
|
|
|
|
/*
|
|
* ENTRY2 is identical to ENTRY but provides two labels for the entry point.
|
|
*/
|
|
#define ENTRY2(x, y) \
|
|
.text; \
|
|
.align ASM_ENTRY_ALIGN; \
|
|
.globl x, y; \
|
|
.type x, @function; \
|
|
.type y, @function; \
|
|
/* CSTYLED */ \
|
|
x: ; \
|
|
y: MCOUNT(x)
|
|
|
|
#define ENTRY_NP2(x, y) \
|
|
.text; \
|
|
.align ASM_ENTRY_ALIGN; \
|
|
.globl x, y; \
|
|
.type x, @function; \
|
|
.type y, @function; \
|
|
/* CSTYLED */ \
|
|
x: ; \
|
|
y:
|
|
|
|
|
|
/*
|
|
* ALTENTRY provides for additional entry points.
|
|
*/
|
|
#define ALTENTRY(x) \
|
|
.globl x; \
|
|
.type x, @function; \
|
|
x:
|
|
|
|
/*
|
|
* DGDEF and DGDEF2 provide global data declarations.
|
|
*
|
|
* DGDEF provides a word aligned word of storage.
|
|
*
|
|
* DGDEF2 allocates "sz" bytes of storage with **NO** alignment. This
|
|
* implies this macro is best used for byte arrays.
|
|
*
|
|
* DGDEF3 allocates "sz" bytes of storage with "algn" alignment.
|
|
*/
|
|
#define DGDEF2(name, sz) \
|
|
.data; \
|
|
.globl name; \
|
|
.type name, @object; \
|
|
.size name, sz; \
|
|
name:
|
|
|
|
#define DGDEF3(name, sz, algn) \
|
|
.data; \
|
|
.align algn; \
|
|
.globl name; \
|
|
.type name, @object; \
|
|
.size name, sz; \
|
|
name:
|
|
|
|
#define DGDEF(name) DGDEF3(name, 4, 4)
|
|
|
|
/*
|
|
* SET_SIZE trails a function and set the size for the ELF symbol table.
|
|
*/
|
|
#define SET_SIZE(x) \
|
|
.size x, [.-x]
|
|
|
|
/*
|
|
* NWORD provides native word value.
|
|
*/
|
|
#if defined(__amd64)
|
|
|
|
/*CSTYLED*/
|
|
#define NWORD quad
|
|
|
|
#elif defined(__i386)
|
|
|
|
#define NWORD long
|
|
|
|
#endif /* __i386 */
|
|
|
|
#endif /* _ASM */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _IA32_SYS_ASM_LINKAGE_H */
|